Core.



CORE.

APPLICATXON FILED MAR. 26. 1913,

Emmim r-5, 191% 2 SHEETS-SHEET B amwmtoz v,L. cox.

CORE.

APPLICATION FILED MAR/2s, ms.

Pawmefi Aug: 6, 3918.

' the entire structnrmsaid strengtheningmemthe tire shoe during vulcanization to smooth @7 x; Lima; @310,

. Y 1"" i Be it .l'mown that I, VICTOR ,LQCoX, a citi' ,zen ofthe United'States, residing at Akron;

in the oonnty'of Summitand StateofOl'rio,

have invented new} and useful Improvements' 1n Cores, of which the followingjis 'a'.

' Specification.

invention relates to cores for ,1huildjug the outer casingsofi double tube? pneumatlc tlres. The object of the int" tioniis to provide. a jigh strong and'dur le core. on Whwh'iaL 'tir Q ShQe may "be-built up and, ysubsequentlyulcanized, .said core comprising a plura'li'ty of. segment-shat ed sections 61') pe i he 'b api e' t ,the vulcanizing' oiiitlie tir shoe. The in- "vention con p1ates "the' formation of the,

hers being 'arranged in pairs with the mom, bers of the-pairs oppositely disposed to each. other and suitably disposedwrth respect to .thevarioustire sections so? 'at snflici'ent strength is imparted "to themf to withstand the roughnsageto which cores of this type .are nsually subjected. A further and important object of the invention is to provide are adapted to force the mner portion's'of the strengthening members apart unison with the spreading or lateral springing apart;

I of-thedmier portions of. the core sections to thereby stretch and smooth the fabric in 'out'w'rinkles and to better shape the shoe, jtheoperation of spreading theinner portions of the strengthening members and the sections, the mold sections coacting with the spreading" or separating means on the] view; the invention corrs istsfin thef iiovel' construction, combination and'arrang'ement of parts cgnstitutmgftheinvention to be i hereinafter-Specifically described 'and f 66 .trated' in theaccompanying drawlngs' Whlch Assrenolt O AKB N, oHI0.

'j difierent figures,

'core' after means on the strengthening members which j that when in their assen1 bled;"relation-,they,,

tions 1 and 3 are wedge-shaped tokper 'terior of the vulcanized tiresshoe.;Each, the sections is formed ofwth1n@1sheet metal},

core sections taking place simultaneously"- vwith the clamping together of .the mold.

tions are formed of thin sheet-it;-i$inecessarvg .to .reinforce them at smtableflporntsfifidi 1n,v order to do this, I EIIIPIOYW StIBDgthQIIHIQ- Withthe foregoingand"other objects in l I P Q Q O l t 'tel t- Patented Application meairaich z'c, 191s; seri'al'nmzusz 'i I form a part hereof where 1t to e understood theta-changes; varies tlonsx-and lllOdlfiCfltiOIlS can.- be; res rted-1 m In thedrawings. in which similar refers ence numerals "indicate like parts in the;

- -F1gure 1 is a side elevation of a core em 'bodying the present invention.

I Fig. 2 1s a fragmentary sectional view en ,1

'larged of a portion oi? the coreshown-inv;

F1g. 1. u 2-61.

Fig. 3 is a View ofa' portion of;thewcore jmi looking-outwardly from theinteriori Fig. 4 is a'transverse sectional View: of a "core embodying the presentinvention with tire shoe thereon showing,the core in,;its-

contracted condition, H 7 Fig. 5 is a transverse sectional' vieiw ofpa mold with 'a core on which is mounted a, the

shoe positioned therein withthe inner por -..-,.1f tions of the core sprung apart to-accom-j;;,

plighthe f notion ofstretc'hingthe ,1T'ab in, an; 4 Fig. 6' is a'perspective strengthenin members. I a,

A core em odying thepresent invention 7 comprises a p'lnralityl-of lsectionsvand-in jj the present case embodiesesectionsgl, and hall of- Which are segment-,shapdi't form an annulus. Inthe-present 103501531} their inward, easy withdrawal: from the T3111 preferably either rolled or starnped andw having'an exterior configuration which itis a desired to impart to the-interior; ofthe tire shoe. The body. portionoff-each sideoflgh'oh a section is carried inwardly ,to form flangesf 5 and G which ares paced' from.eachiotherq In view of the fact that the-(varioussec-51160 members 7 one ofwhich is shown'in Fig; 16.1; Each strengthening member embodies: inn-57105 outer semicircularly-curi'red portion Sifasha ioned to snugly fit the interiorof a core sec- I tion and provided with an inner? groove 9 ton: reduce the weight of the entirefmemben'; :Theil' .conn, 1 i a n1. My preferred embodiment of the invention, but:

e ber is furthermore provided w thvan-in-.: :11

wardly-extending arm provided with an aperture 11 and a projectingpin 12. The pin 12 is held in position in an opening in the arm 10 against easy removal. These strengthening members are arranged in pairs with their upper faces 13 in substantial contact at the inner face of the 'core section opposite to the tread thereof and with the two arms thereof in parallelism and projecting inwardly toward the center of the core and so disposed that the pin 12 in one member of each pair will engage in the opening 11 of the companion member and the pin 12 f the companion member will be he opening 11 of the first mem disposed in her so that the pins and openings 11 in the pairs are reversely disposed. I The pins 12 are of such length that when the opposing facesof' the arms 10 of the strengthening members are in sebstantial'contact the ends 14 of the pins on one member project a considerable distance beyond the outer face .of

the arm 10 or the companion member. The

inwardly-extendingflanges 5 and 6 of the ing the building up of a tire shoe I employ a broken ring-shaped member comprising segment-shaped sections 16, 17, 18 and 18' which assembled form an annulus of proper diameter to fit within and engage the inner faces of the flanges of the body members of the core and also abut against the inner faces of the pairs of arms 10 of the strengthening nembers. The section 16 of the inner ring is secured to the core section 1 by bolts 19 and also by bolts 20 to the adjacent strengthening members 'of the core sections 2 and 4;. The lines of severance between the inner ring members 16 and 17 and18 are parallel with the lines of severance between the section 1 and .the sections 2and 4 and the segment 16 is adapted to project or overlap the strength ening members of the core sections 2 and 4 asclearly shown in Fig. 1. By making the lines of severance parallel with the lines of severance between the core sections no interference will be had in withdrawing the sectionll when the bolts 20 are removed. All of the ring sections are fixed to their respective core sections and the only temporary connections are the bolts 2O- for holding the key sections in position. The description which has been given with respect to the key section l appli'es; with equal force to the key section 3 and a description thereof will notbe duplicated as it is not thought necessary to be repeated here. The :rmg sections are secured by bolts or cap screws 21- toone member of each pair of strengthening members so as to permit'transverse movement of the arms 10 at the innervendsvof each pair of strengthening members toward and away from each other freely,-

Imuse 'a tire shoe 22 ,is built up on the assembled core andthe core is then placed in a mold comprising two sections 23 and 24 which'are c'lamped'together in the usual manner. Previous to the clamping of the mold sections together the parts will-be in substantially the position shown in Fig. 4

with the ends 14 of the pins 12 projecting transversely from the opposite faces of the arms 10 of the strengthening membersand as the mold sections are clampedtogether they spring the two inner portions, of the core apart thereby stretching and compact.- ing the fabric of the tire carcass 22 against the inner faces of the mold sections which operation serves to make a better and more efficient tire shoe. In removing a tire shoe after vulcanization the foregoing-operation is reversed. The sheet material of which; the

' core sections is formerfigpossesses a slight degree of resiliency at {east to permit aslight springing apart of the innerends 10 of the strengthening members 7, the material of the core body constituting a spring hinge for this purpose. Q

I claim, a v I 1. A core comprising a plurality of segment-shaped sections adapted when. assembled to form an annulus, said sections being of tubular formation and each side wall thereof provided with an inwardly-pro jecting radial flange, a plurality of pairs of strengthening members secured in the cavity of each section with the members of eachpair opposite to each other and each member provided with an inwardly-extending integral arm secured to one of the flanges ofthe section in which it is placed, a sectional ring -within said corethe sections of which are secured to the inner ends of a portion of the arms of said strengthening members and adapted to hold said core sections temporarily in place, and means to separate the inner ends of said strengthening members to spring the side walls of the core sections apart during the vulcanizing operation.

2. A core comprising a plurality of seg ment-shaped sections adapted when. as-

sembled to' form an annulus, said sections being of tubular formation and each side wall thereof provided with an inwardlyproje cting radial flange, a plurality of pairs of strengthening members secured in the cavity of each section with the outer portions of each member of each pair fashioned to coact with the inner faces of each section and each member provided with an inwardly-extending integral arm secured to one of the flanges of the section in which it a each pair being I apart during the newness Y is placed, said members heing'dispcsed in pairs and withthe members of each pair opposite to each'other, a sectional ring Within said core, the sections of which are secured to the inner ends of a portion of the arms of said strengthening members and adapted to hold said core sections-temporarily in place, and means to separate the inner ends of said strengthening members to spring the side Walls of the core sections vulcanizing operation; r

3. A core comprising a plurality of seg-' ment shaped sembled to form an annulus, said sections being of tubular formation and each side wall thereof provided with an inwardlyprojecting radial flange, a plurality of pairs of strengthening members secured in the cavity of each section with the members of each pair opposite to each other and each member provided With an inwardly-extending integral arm secured to one of the flanges of the section in which it is placed, the inner face of each arm being provided with a projecting spaced therefrom, the pin on one member of A disposed opposite to the opening in the opposing member and adapted to be received therein, said pins adapt-- ed to project beyond the outer faces of said arms when said core sections are assembled, and means to engage the projecting ends of said pins to force the arms away from each other to spring the sections adapted when as-' pin and with an opening opposing faces of said.

side walls of the coresections apartduring the rulcanizlng operation.

4. A core comprising a plu.rality of seg- I cavity of each section with the members 46 inwardly-extend of each pair opposite to each other and each member provided with an ing integral arm secured to one of theflanges eithe section in which it is placed, the inwardly-extending arms of said strengthening members eachprov'ided with a project mg p111 and an opening the pins andopenings of the opposing members heingre 4 versely disposed to permit the pins of one member to he received in the openings'in the opposing member said pins adapted to pro jec't through saidarms When sa-id arms are vin contacting en agement, a sectional ring Within said core for holding the sections temporarily in position during the formation of the' core, said pins adapted to be forced laterally by engagement with the mold sections during the vulcanizing of to spring the side walls of the apart for con'lpressing the tire said mold members.

core sections shoe held by ln'testimony whereof I have hereunto set m hand.

y t vrc'roa L. cox.

the tire shoe- 

